The temperature on June 12, 1915 was between 9.4 °C and 21.1 °C and averaged 15.8 °C. There was 9.7 hours of sunshine (58%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
January 24 » World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.
January 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
March 20 » Albert Einstein publishes his general theory of relativity.
June 29 » The North Saskatchewan River flood of 1915 is the worst flood in Edmonton history.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
Day of marriage November 4, 1935
The temperature on November 4, 1935 was between 5.9 °C and 10.5 °C and averaged 8.4 °C. There was 0.5 mm of rain during 1.0 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
January 11 » Amelia Earhart becomes the first person to fly solo from Hawaii to California.
February 28 » DuPont scientist Wallace Carothers invents nylon.
May 25 » Jesse Owens of Ohio State University breaks three world records and ties a fourth at the Big Ten Conference Track and Field Championships in Ann Arbor, Michigan.
July 28 » First flight of the Boeing B-17 Flying Fortress.
December 9 » Student protests in Beiping (now Beijing)'s Tiananmen Square, dispersed by government.
December 30 » The Italian Air Force bombs a Swedish Red Cross hospital during the Second Italo-Abyssinian War.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I75287.php : accessed October 7, 2026), "Jan Knol (1915-)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.